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《Journal of System Simulation》 2008-04
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Modeling and Simulation of Positive Pulse System for Heavy Weight Double-pulse Shock Testing Machine

CHU De-ying1,WAMG Yu2,WANG Gong-xian1,HUA Hong-xing1 (1.State Key Laboratory of Vibration Shock & Noise,Shanghai Jiaotong University,Shanghai 200240,China;2.Institute of Naval Vessels,Naval Academy of Armament,Bejing 100037,China)  
In order to simulate the actual underwater explosion environments in laboratory as much as possible and satisfy the newly-built shock resistance standard,a high fidelity dynamic model of a high-energy hydraulically-actuated positive shock pulse system was proposed,which is a part of the whole heavy weight double-waveform shock testing machine.The positive shock pulse system models include the hydraulic driven system,the pulse generation system and the base isolation system.The maximum testing capacity for the shock testing machine reaches about 5,000kg,which is much higher than the traditional middle weight shock testing machines and their testing capacity is only about 2,700kg.Numerical simulations were done under the conditions that the shock velocities for the specimens are 5.0m/s,4.0m/s and 3.3m/s,respectively.The simulation results demonstrate that the shock testing machine proposed can produce nearly the same shock acceleration waveform as the newly shock resistance standard BV043/85 and MIL-S-901D.
【CateGory Index】: TH87
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